Sharpening-machine.



I im. Patented June 15, 1915.

R. S. GREEN.

SHARPENING MACHINE.

APPLICATION FILED AUG-21 1,143,333.

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- SHARPENING MACHINE.

Patented June 15', 1915.

APPLICA'HON FILED AUG.2I, 1914.

4 SHEETS-SHEET 2.

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SHARPENING MACHINE.

AgPLlcAUoN FILED Auam. 1914.

Patented June 15, 1915.

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-V SHARPENING MACHINE. APP-L-ICATION FILED AUG-21, 19M.

Pmntd June 15, 1915.

4 SHEETS-SHEET 4.'

I i K j @www 1 Citizen of the U1 Cucago, n he Comfy caton, n which correspont l of l'efelence in the derenf: gmas like plrs.

The object of my nvenon is a grinding machine for sharp@ and other blaes, which macne Constr sied as i@ auomaca' f S'rop the blades Wh unifmw and speed.

To these ms, my. inw/enh the combination o? @lememb mre partcualy described am@ pointed out in the daims,

n the drawings Figur@ i.

Vaon a de 'ce of mj; lmfen'ilon.

4, n. n gwn, l 1g. 1s n e View mdea'xh ta Fig. 2, wewul m t there shown, F10. 5. is um* taken upon im flawed m the dcon S shown, Flg. 6. is a plan holder :md Ffg. 7. 1:* a se V ,su 9mm, fawn?" v, E f ,4. o1 10mi suppon 'me 32:5 i @Sjectlfze bemg connect-QQ. 03,' frame member the uprghts Q5 2, 1 nmfmg crwmv 'p fm,

Fig. 5. The peripheral surfaces of the rollers are intended to be separated from each other as more clearly shown in the Fig. 5, the degree of separation being governed bv mea ur-z of the adjusting nuts 11.

Formed upon the front and rear respectively of the upright members 3, 3, are flanges 25, 26, Figs. 1, 4 and 5, which eX- tend downwardly from the top and are adapted to form vertical guides for counterpart bearing blocks 27, 28, better shown in Figs. 2 and 4, which blocks have depending portions Q9, 30, Fig. 4, which are tted side by side between the flanges 25 and 26. Said parts 29, and 30, have opposing faces which are cut away :1s-shown at 31, and 32, to permit the insertion of a fastening-bolt 33, having a tightening nut' 34, Figs. l and 2, upon its outer end. The head of said'bolt is arranged to overlap the parts 29 and 30, as shown in Fig. 4, so that when the bearing blocks Q9, and 30, are properly adjusted as to height, they may be rigidly secured in place by tightening said nuts. Each of the parts Q9 upon the bearing block 27, is made longer than the adjacentv part 30, and is provided with a rearward extension 35 arranged to project beneath' the part 30. A pin 36, is formed upon the part 35 and arranged to extend into an eccentric groove 37, formed in a movable eccentric member 3S, rigidlyr attached to a pivot-pin 39, ex-

tended through the part 3, there being two of said eccentric members, one located upon the inner face of each of the upright members 3. Upon the outer end of each of the pins 39 is rigidly attached an adjusting arm 10, having an adjusting pin 4l, which is loosely passed through a bore therein and adapted to enter uny one of a series of bores 42, Figs. 3 and 4, formed in the faces of the upright-s 3, 3, respectively. A feedserew 43, has its ends journaled in the blocks 2S, 93, and is provided with a driving pulley t-fl, adapted to be driven from any approved source of power. Journaled in bearings in the blocks 27, 27, is a shaft, the end or bearing portions of which are designated by 45, A portion, 16, of said shaft is eccentric to the parts i5, for the purpose hereinafter stated. Said shaft is generally referred to as the eccentric shaft and is adapted to be driven at a uniform rate of speed by means of a pulley 47.

The feed and eccentric shafts 43, and 46, respectively, are adapted to feedand manipulate a work-holder generally designated by 48, shown in all of the figures except 4. The wrak-holder is composed of several elements comprising a main body 49,-having a rear extension 50, which is integral therewith. .lointedly connected to the rear end thereof by means of a bolt 51. is a counterpart niember 52, the forward end of which is detachably connected to the main member by -means of a catch or button 53, rigidly at tached to the lower end of a pin 54, which is journaled in a bore formed in the part 49, and is provided with an operating arm 55, rigidly attached to the upper end. The members 50, and v52, are arranged parallel to each' other with a space or opening-between as clearly shown in Figs. 5 and 7, the rear portion of said opening as shown in Fig. 5, being intended for the reception of the eccentric shaft 46, the diameter of which corresponds to the distance between the opposing faces'aloovey and below which Contact therewith, while in the forward part are fitted counterpart blocks 5G and 57 respectively, the former being attached to the part 50, and the latter to the part Said blocks have counterpart semi -circular notches 5S. which are threaded as indicated in dotted lines in Fig. 6, and when brought together constitute a two-part nut adapted to receive the feed-screw 43. screw threaded stem 59, is tapped into the forward end of the part 49, and secured iny place by means of alock-nut 60. Rigidly attached to the forward end of the part 59, is a flat spring 61, to the forward end of which are secured opposing clamping members 62, 62, adj ustably connected by means of a bolt 63, and thumb-nut 64. Formed upon or riveted to the forward ends of said clamping members are jaws 65, 65, adapted to grasp and hold a razor or other blade 66, in position to Contact with the sharpening rolls.`

The feed-screw 43, is provided with blank spaces G7, and 68 respectively at opposite ends for the purpose hereinafter stated, while the eccentric shaft has the non-eccentric parts 45, 45, above referred to, made to correspond in relative length and position to the non-threaded portions respectively, of the feed shaft, it being understood that the threaded portion of the feed shaft and the eccentric 46, are arranged to correspond with each other.

The operation is as lfollows: The blade 66, having been clamped in the work-holder as shown in Figs. 6, and 7, the part 52, is released by turning the catch 53 to permit said part to assume the position indicated in dotted lines in Fig. 7. The.4 holder is then placed in position at the right hand end of the machine with the blocks 56, and 57, encircling the blank part 67, of the feed shaft, it being assumed vthat the grinding rolls, and the feed and eccentric shafts are in continuous operation. The part 52, is then lifted and loclv'ed in its normal position by means of the catch The holder is then moved laterally until the two-part nut is in engagement with ythe feed-screw and the rear portion of the holder in engagen'ient with the eccentric 46. This adjustment is intended to be such as to cause the left-hand edge of the blade to begin its threaded thereon Without bringing the Work int-o contact with said rollers at the outset, a work-holder threaded upon said feedscrew, said screw forming a pivot therefor, an eccentric shaft arranged parallel to said feed-screw, the axis of said shaft being in 'the same plane with that of said feed-screw and in vibratory connection with said Workholder, and means for rotating said feedscrew and shaft.

5. A sharpening-machine, comprising, in combination, two parallel rollersY having honing and stropping surfaces, means for r0- tating said rollers in opposite directions, `a feed-screw arranged parallel to the axes of said rollers, an eccentric-shaft arranged parallel to the axis of said feed-screw, the length of the eccentric portion thereof being less than that of said feed-screw, to permit a work-holder to be placed thereon and removed therefrom While the machine is in operation Without causing a vibration of said holder until the latter is in place, means for rotating said feed-sore7 and eccentric? shaft respectively, and a Work-holder threaded upon said feed-screw, 'said holder being in opera tive connection with said threaded c shaft.

Tnvtestimony whereof, I have signed this specification in the presence of two subscrb- 30 

